Bookbinding



A. COBB.

BOOKBINDING.

APPLICATION men SEPT. Is. 1918.

1,336, 1 9s, Patented Apr. 6, 1920.

UNITED STATES PATENT OFFICE.

ARTHUR COBB, OF CLEVELAND, OHIO, ASSIGNOR F ONE-HALF TO FRANK B.I-IOUGI-ITON,

OF CLEVELAND, OHIO.

IBOOKBIN DING.

Application filed September 16, 1918.

To all whom it may concern:

Be it known that I, ARTHUR COBB, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Bookbinding, of whichthe following is a full, clear, and exact description.

This invention is a durable, sanitary, easily applied book cover, whichis of perhaps greatest practical value for rebinding books whoseoriginal covers have become unserviceable for one reason or another;although, obviously, the cover may be applied in the first instance tothe coverless, sewedtogether sheets of printed paper constituting thebook or insert.

The cover constituting this invent1on is made of sheet metal,-thevarious parts of which are constructed and combined substantially asshown in the drawings, and hereinafter described and pointed outdefinitely in the appended claims.

In the drawings, Figure 1 is a side elevation of the book cover, Fig. 2is an inside view of the back part of one of the cover sides and bookinsert to which the cover is applied, when the cover is swung open; Fig.3 is a sectional end view (slightly enlarged) in the plane of line 3-3of Fig. 1; Fig. l is an enlarged sectional view of the back of the bookand cover in the plane of line 4l'lon Fig. 1. Fig. 5 is a similarsection in the plane of line 55 of Fig. 1. Fig. 6 is a similar sectiongoing about half way through the book in the plane of line 6-6 of Fig.1, and Fig. 7 is a detached View of one of the hinge lugs.

The cover as shown is made of various parts formed from thin sheet metalwhich of course may be enameled or otherwise protectingly coated. Thecover includes in its entirety a back 10, two sides 20-20, at least fourhinge lugs 35, two associated with each side, and two hinge pintle wires30, one associated with each side.

The back 10 is curved so as to have substantially the shape which thebacks of ordinary book covers have. The side edges of the back are bentforward forming side flanges 12 between which the sewed-together back ofthe paper book or insert B projects when the cover has been applied tosaid book. Preferably these side flanges are bent Specification ofLetters Patent.

Patented Apr. 6, 1920.

Serial No. 254,280.

so that if they were prolonged they would intersect at about the middleof the book. If bent into this position they permit the sides to swingfarther back, as shown by dotted lines in Fig. l, than they could beswung if said flanges were only bent into parallel positions.

At suitable points, preferably about one and one half inches from thetop and bottom of the back two tongues are formed integral with eachflange. Each of these tongues is bent so as to form a hinge barrel 13;and of course the two hinge barrels on the same side must be inalinement. \Vhen the flanges 12 are bent into the angular relationshown, these tongues are preferably bent outward at their line ofjuncture with the flange, as shown in Fig. l, and are then curved inwardto form the hinge barrels substantially as shown.

Each of the cover sides is likewise formed of thin sheet metal. A sunkenpanel 21 is pressed centrally into the cover side;

and the four edges or flaps 22, 23, 24:, 25, of

each cover are bent inwardly so as to form the double thick marginaledge around said cover panel. The extreme edges of the bent over flapsof each cover side engage the edges of the inwardly pressed panel, andthe corners of the flaps are mitered to fit one another, so that theinner surfaces of said flaps lie in substantially the same plane as theinner surface of the panel. A sheet of paper or cloth may be glued tothis inner surface thereby concealing the joints, and covering the slot28 in the rear flap.

In the U-shaped or looped rear edge 25" of each cover side two slots 26are cut out. Part of the metal cut out to form these slots remainsattached at one edge and is bent across the space between the cover sideand the turned over margin thereof, and thereby forms an inner wall 27for said slot. A slot 28 is also cut out of the turned over rear flap ofeach cover as shown in Fig. 2.

In the chamber or space between the cover side and the rear turned overflap 25 thereof, a movable hinge pintle wire 30 is placed. This is bentinto substantially the shape shown so that one end 31 is bent back uponitself toward the opposite end 32 and into alinement therewith. At somepoint midway between the ends of this pintle wire and at such a pointthat it is accessible through closed about its hinge axis any movementof the parts to which it is the slot 28 this wire is formed with a kink33, the purpose of which will be presently explained.

35 represents hinge lugs. There are at least four of these, twoassociated with each cover, and with each side of the back. Each ofthese hinge lugs has a prong, preferably in the form of a flat blade 36which is to be forced through a considerable number of the leaves of thebook insert from the outside thereof toward the middle but close to therear edge of said book insert. Of course, the holes in the-book-toreceive these prongs may be formed in the book by some suitable tool.Each of these hinge lugs is formed with a hingebarrel 37.

To assemble these parts the hinge lugs are first attached to the bookinsert at the proper places and in the 'manner stated. That is to say,the prongs thereof are forced into the book insert near the back edgethereof, and-in such position that the hinge barrels of said lugs cancoiperate with the hinge eyes on the back in the manner shown. Then thebook with these hinge lugs attached to it is placed in the properrelation to the back, that is to say, the back of the book is insertedbetween the side flanges 12, Wltlltlle hinge barrels 37 in substantialend contact and in alinem'ent with hinge barrels 13. Then the sides areapplied, one by one, by so. placing them as shown withrespectto the backand the book insert that the two pairsof alined hinge barrels 37 and 13go into and it each of the slots -26 in-the reane'dge of tl e side.

lvhen the parts are lII'tlliSPOSltlOil tool of some sort ispassed'through the slot 28, and ,by'engaging with the kink 33 of the 33and prevent any such movement of the wire as will carry its ends out ofthe hinge barrel.

This having been done the other side will be applied in the same-manner.Any endwise movement of the hinge barrels with respect to each other orto. the cover sides is preventedby'the ends of the slots 26. Eac

cover may, however, be swung open or without causing hi'nged,and, whenthe backis formed as s'hownpmay be swung back very far without'imposingany strain-upon itself or the associated parts. The-book may be openedfiat' at "any page thereof, becausethe hinging of-the hinge lugs'to theback and cover perleisure time.

mits the back of the-bookinsert to have substantially the sameindependent freedom of movement as the backs of books bound in theu'sualway.

As a detail which is of some practical value, attention is called to thefact that the blades 37 of each hinge barrel may be formed with numerousholes 38 through them. It is intended that the holes shall be filledwith glue-and that both surfaces of the blade shall be coated with gluebefore the blades are driven'into the holes in said insert. This willeffectively aid in keeping over again withmliflerentbook inserts; and

maybe applied by a library assistant-inhis If the metal be properlyenameled the cover can be kept in a clean andsanitary condition.

Having described my invention, I claim 1. A book cover, cemprising,:incombination, a metal-back plate, aset of metal hinge lugs and a coverside,-all ofwhich are hingedonthe same axis to one side' edge of thebackplate and are free to swing independently about that axis," anotherset of metal hinge lugs and another cover si-de,-all of which arehin gedto the same axis to the other sideedge of the back plate and are free'toswing independently about that axis, all ofsaid hinge lugs being formedattheir free ends with means for connecting them to a-book insert'tothereby secure the book insert within the cover.

2. A metal-book cover comprising in combination a metal back havingintegral hinge barrels at its edges, hinge-lugs each having a prongcapable of being inserted in the book to be covered and having alsoahinge barrel adaptedto be alined with a hinge barrel-"on the back, andtwo sides each pivotally connected with hinge barrels of the backand-of-the hinge lugs.

3. The combination of a sewed together paper book, of a metal backhaving forwardly bent side flanges, hinge lugs having prongs which areinserted into the book from opposite sides thereof and near its back,two sides, and means pivotally con necting said sides, hinge lugs andside flanges of the back.

L A book cover comprising-in combination aback having'turned overflanges on its vertical edges, and hinge barrels'formed integrally withsaid flanges; hinge: lugs each barrel, and two sides, and a pintle wireassociated with each side pivoting it to the hinge barrels of the hingelugs and the back.

5. A metal book cover comprising in combination a back having forwardlybent side flanges, and hinge barrels which project forward from saidflanges, metal hinge lugs each having a prong adapted to be insertedinto the book to be bound, and having also a hinge barrel, two coversides, each having in its back edge a recess fitted to receive twoalined hinge barrels, one on the back and one on a hinge lug, and meanspivotally connecting the back edge of each cover with the associatedhinge barrels of the back and as sociated hinge lugs.

6. A metal book cover comprising in combination a back having forwardlybent side flanges and hinge barrels inte ral with said side flanges,hinge lugs each having a prong adapted to be inserted into the book tobe covered, and each having a hinge barrel adapted to be alined with andto be in substantial contact with a hinge barrel on the back, and twometal cover sides each com prising a metal plate, the rear edge of whichis folded over on a flap to form a double thick rear margin and aU-shaped rear edge,there being slots in the U-shaped rear edge of saidplate each adapted to receive a hinge barrel on a hinge lug and a hingebarrel on the back, and a pintle wire in the space formed between thecover and its folded over rear flap having its ends alined and pointingin the same direction, said wire being movable with respect to the coverso that the two ends thereof may be threaded through the hinge barrelsof the back and hinge lug.

7. A metal book cover comprising in combination a back having forwardlybent side flanges and hinge barrels integral with said side flanges,hinge lugs each having a prong adapted to be inserted into the book tobe covered, and each having a hinge barrel adapted to be alined with andto be in substantial cont; ct with a hinge barrel on the back, and twometal cover sides each comprising a metal plate, the rear edge of whichis folded over as a flap to form a double thick rear margin and aU-shaped rear edge, there being slots in the U-shaped rear edge of saidplate each adapted to receive a hinge barrel on a hinge lug and a hingebarrel on the back, and a pintle wire in the space formed between thecover and its folded over rear flap having its ends alined and pointingin the same direction, said wire being movable with respect to the coverso that the two ends thereof may be threaded. through the hinge barrelsof the back and hinge lugs,and the folded over rear flap of the coverside having a slot for the insertion of a tool to so move said pintlewire.

8. A metal book cover comprising in combination a back having forwardlybent side flanges and hinge barrels integral with said side flanges,hinge lugs each having a prong adapted to be inserted into the book tobe covered, and each having a hinge barrel adapted to be alined with andto be in substantial contact with a hinge barrel on the back, and twometal cover sides each comprising a metal plate, the rear edge of whichis folded over on a flap to form a double thick rear margin and aU-shaped rear edge,-there being slots in the U-shaped rear edge of saidplate each adapted to receive a hinge barrel on a hinge lug and a hingebarrel on the back, and a pintle wire in the space formed between thecover and its folded over rear flap having its ends alined and pointingin the same direction, said wire being movable with respect to the coverso that the two ends thereof may be threaded through the hinge barrelsof the back and hinge lugs,and the folded over rear flap of the coverside having a slot for the insertion of a tool to so move said pintlewire, and means carried by said cover side for engaging said pintle wireto prevent the accidental endwise movement thereof.

9. A metal book cover comprising, in com bination, a back havingforwardly bent side flanges and hinge barrels integral with said sideflanges, hinge lugs each having a prong adapted to be inserted into thebook to be covered and each having a hinge barrel adapted to be alinedwith and to be in substantial contact with a hinge barrel on the back,and two metal cover sides each formed of a metal plate having a singlethick central panel and having flaps on its four sides which are foldedinwardly into parallel relation with the side and into contact with themargin of the panel and having fitted mortised corners,-the U-shapedrear edge of said cover plate having slots each adapted to receive thehinge barrel of a hinge ing and a hinge barrel of the back, and pintlewire lying within the U-shaped rear edge of said cover plate and passingthrough the alined hinge barrels.

In testimony whereof I hereunto aflix my signature.

ARTHUR COBB.

